Improvement in cotton-gins



1.: L.- TUTTLE.

' Roller Cotton Gin.

No. 15,906. I Patented 0m. 14, 1856. Q

UNITED STATEs PATENT OFFICE.

JOHN L. TUTTLE, OF NEW YORK, N. Y.

" IM PROVEMENT IN COTTON-ems.

Specification forming part of Letters Patent No. [5,906, dated October 14, 1856.

I0 all whom it may concern:

Be it known that I, J OHN L. TUTTLE, of the city, county, and State of New York, have in vented certain new and useful Improvements in Roller Ootton-Gins; and I do hereby dc clare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part thereof, inwhich-- Figure 1 represents a perspective view, and Fig. 2 a vertical section, showing the character of my improvement.

Where similar letters of reference occur in the separate figures they denote like parts of the machine in both. I

The nature of my invention consists in the combined use of a straight-edge and roller at ornear the breast of the gin for stopping the seeds and knocking them back intothe breast.

To enable others skilled in the art to make and use my invention, I will proceed to describe the same with reference to the draw- A represents a stout'frame of convenient form and size, in whichis hung a toothed cylinder, B, of peculiar construction, but which cylinder will form the subject-matter of another application, which I am about to make, and for that reason need not here be particularly described. On one of the journals 0 of the cylinder B is placed a pulley, D, around which a belt may pass from any first mover to,

give it motion; or it may be turned by the handle E.

In suitable boxes, F F, on the face ofthe upright pieces of the frame are hung the journals of a roller, G, having longitudinal ribs a I a on its periphery, and on one of its journals 0, made of steel, the edge of which is drawn down to a knife-edge and just escapes theteeth of the cylinder B. The cotton is carried up from the breast of the gin by the teeth of the cylinder B, and the straight-edgawith its sharp edge, passes underneath the cottonseeds and raises them slightly up onto itself. where they are met by the ribs or on the roller G and knocked back into the breast of the gin, while the fiber is carried through under the straight-edge, and may be taken off by a brush behind the cylinder in the usual well known Way.

The breast of the gin may stand a short distance from the cylinder B, or may have a slotted bottom, so that the seeds, after they are entirely divested of their fiber, may drop through; but so long as they contain any fiber they are carried up again and again until entirely cleaned, and when in this condition the shifting and turning of the cotton in thebreast sifts them through, and they drop out below.

I am aware that a guard or shield, which might be termed a straight-edge, though not thin enough to pass under the seeds, has been used, but do not know that a roller such as described has ever been'used in connection therewith, so as to completely keep back the seeds, which my invention does completely.

Having thus fully described the nature of my invention, I would state that I do not claim the knocking-roller and straight-edge when used separately with the toothed cylinder, as they have been thus used; but I What I claim therein as new, and desire to secure by Letters Patent, is

The combined use of the straight-edge and roller, for stopping and returning the cottonseeds to the breast of the machine and allow ing the fiber only to pass through, substantially as set forth. J. L. TUTTLE. Witnesses: r

A. B. STOUGHTON, E. COHEN. 

